Refer to the Mini$-$S$\backslash$&P contract in Figure $22\mathrm{.}1.$ Assume the closing price for this day. Required: a$.$ If the margin requirement is $\backslash (13\backslash \%\backslash )$ of the futures price times the contract multiplier of $\backslash (\backslash$$ $50\backslash ),$ how much must you deposit with your broker to trade the June maturity contract? b$.$ If the June futures price increases to $\backslash (\backslash$$ $4,397\backslash ),$ what percentage return will you earn on your investment if you entered the long side of the contract at the price shown in the figure? c$.$ If the June futures price falls by $\backslash (1\backslash \%\backslash ),$ what is your percentage return?